Proteins in seed and seedlings of selected Austrian pine (Pinus nigra Arnold) trees as genetic markers tolerant to drought

The study includes 40 lines of free pollination originating from 5 provenances Sutjeska, Visegrad, Tara, Teslic, and Durmitor (Bosnia nad Herzegovina, Serbia, and Montenegro). Specific characteristics of the studied provenances, populations, and free pollination lines were confirmed by the analyses in the salt-soluble proteins. The identical protein composition was proved in a small number of cases in the replicates of the same free pollination line, which indicates a high intra-line variability, which can be result of the effect of father, as well as of heterozygosity of mother trees. The analyses of protein composition of seed showed considerable differences at provenance level. Inter-line, population and provenance differences, and also, the interaction between the origin and drought factor, were recorded for 9-day-old seedlings germinated in induced drought conditions and in normal conditions.